By using a specially designed fixture, an 8,400 N-mm constant moment generated through the axial movement of the MTS actuator was applied to the spine specimen to achieve flexion and extension motions

Intervertebral displacement at L4–L5 adjacent to the fusion level was recorded continuously using an MTS extensometer.<p><b>Copyright information:</b></p><p>Taken from "Biomechanical comparison of lumbar spine instability between laminectomy and bilateral laminotomy for spinal stenosis syndrome – an experimental study in porcine model"</p><p>http://www.biomedcentral.com/1471-2474/9/84</p><p>BMC Musculoskeletal Disorders 2008;9():84-84.</p><p>Published online 11 Jun 2008</p><p>PMCID:PMC2438358.</p><p>